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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Generation of open-circuit spin current on GHz scale in structured Pt/YIG by electric fields
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Generation of open-circuit spin current on GHz scale in structured Pt/YIG by electric fields

机译：电场由结构化Pt / Yig的GHz刻度上产生开路旋转电流

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摘要

Recent studies point to virtual hopping of the oxygen atoms and strong spin-orbit interaction as the source of coupling of the magnetic order of yttrium iron garnet (YIG) to an applied external electric field. As shown here, an electric field can thus be utilized for pumping magnonic spin current at structured Pt / YIG interface. A finite uniform temperature is needed to thermally activate magnons as the carriers of the spin current. This current arises thus at finite uniform temperatures, applied external electric field, and for appropriate nanostructuring. Due to the inverse spin Hall effect, the generated magnonic spin pumping current is further converted into an electric voltage. We analyze the underlaying microscopic mechanism for the generation of the spin current and demonstrate by full numerical simulations that the spin current is substantial. Effects related to static as well as time-dependent E-fields and enhanced damping are discussed. The results indicate that generally, the proposed method for generating spin currents works for magnetic insulators that respond to a moderate electric field, and that the required nanostructuring poses no obstacle making this approach highly suitable for spintronic applications.
机译：最近的研究指出了氧原子的虚拟跳跃和强旋转轨道相互作用作为钇铁石榴石（YIG）磁场的耦合源（YIG）到应用的外部电场。如此所示，可以利用电场用于在结构化的PT / YIG界面处泵送磁场旋转电流。作为旋转电流的载体，需要有限均匀的温度。因此，该电流在有限均匀的温度下，应用外部电场和适当的纳米结构。由于旋转旋转霍尔效应，所产生的磁旋转泵送电流进一步转换成电压。我们分析了用于产生旋转电流的底层微观机制，并通过旋转电流大幅度的全数值模拟证明。讨论了与静态以及时间依赖的E场相关的效果和增强的阻尼。结果表明，通常，用于产生旋流的所提出的方法适用于响应适度电场的磁绝缘体，并且所需的纳米结构姿势不会使该方法高度适用于旋转式应用。

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